By Brendan Conway

The question of “who sold off Apple?” is being answered with names like Dan Loeb and Leon Cooperman. But the list of buyers during the fourth quarter has prominent names, too, including George Soros.

Here’s a quick roundup of well-known managers who bought and sold Apple’s (AAPL) stock in the latest SEC document dump — keeping in mind that you’re not necessarily looking at what these investors hold today. Figures reflect their portfolios as of Dec. 31.

Now for the buyers. David Einhorn’s Greenlight Capital increased its stake by about a fifth, to 1.3 million shares from 1.1 million shares, with a slug of call options, too.

George Soros’ Soros Fund Management more than doubled its Apple holding with another 100,000 or so shares in the portfolio. Soros, we’d also point out, did this during the same quarter that he dropped stakes in Facebook (FB) and LinkedIn (LNKD).

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Chris Dieterich has covered the U.S. stock market for The Wall Street Journal and Dow Jones Newswires. He is a graduate of Regis University and the Missouri School of Journalism.